A polar vortex is unleashing extreme winter weather across the United States, affecting millions with dangerous cold, heavy snowfall, and treacherous icy conditions. The US National Weather ...

The polar vortex, as explained by the National Weather Service, is a large area of low pressure and cold air that encircles the Earth’s poles. Even though it’s often framed in the media as a weather ...

Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

A National Oceanic and Atmospheric Administration graphic shows cold air surging south into the U.S. from the polar vortex above the north pole.

Sometime next week, 89% of the contiguous United States will be below the freezing mark and 27% of the Lower 48 will be below zero (minus 18 degrees Celsius), according to National Weather Service ...

This week, parts of the U.S. are experiencing the 10th and coldest polar vortex event this season. Weather forces in the Arctic are combining to push the chilly air into the U.S. and Europe.

Sometime next week, 89% of the contiguous United States will be below the freezing mark and 27% of the Lower 48 will be below zero (minus 18 degrees Celsius), according to National Weather Service ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America’s winter of repeated polar vortex invasions, meteorologists warn. And it will stay frozen ther… ...

This week, parts of the U.S. are experiencing the 10th and coldest polar vortex event this season. Weather forces in the Arctic are combining to push the chilly air into the U.S. and Europe.